_Geographic distribution._--Extreme southeastern Virginia, south along Atlantic Coast to and including peninsular Florida (except possibly extreme southern tip), thence westward to southern Louisiana and the southern part of eastern Texas (see Fig. 2). _Diagnosis._--Size small (see measurements); sagittal crest present but low; interorbital region relatively broad; teeth essentially as in _L. i. intermedius_ except averaging smaller; pelage yellowish-brown to grayish-brown. For comparison with the Cuban subspecies, see account of that subspecies. _Comparisons._--From _Lasiurus intermedius intermedius_, _L. i. floridanus_ differs as follows: averaging smaller (see measurements), especially in forearm and skull; teeth smaller; skull having less prominent sagittal and lambdoidal crests; braincase more nearly round; tympanic shields over petrosals approximately same size and therefore relatively larger; pelage of upper parts duller, yellowish-brown to brownish-gray instead of yellowish to yellowish-orange. _External measurements._--Average (and extremes) of 14 February-taken males from along the Aucilla River, Jefferson Co., Florida: Total length, 126.8 (121-131.5); length of tail-vertebrae, 54.2 (51-60); length of hind foot, 9.8 (8-11); length of ear from notch (13 specimens), 16.3 (15-17); forearm (dry, 13 specimens), 48.1 (46.7-50.0). Corresponding measurements of the holotype, an adult female (after Miller, 1902:392): 129, 52, 9, 17, 49. Average (and extremes) weight in grams of the series of males: 17.7 (15.5-19.5). For cranial measurements see Table 1. _Records of occurrence._--Specimens examined, 65, as follows: TEXAS: Austin, 1 (Texas U.); _4 mi. N Huffman_, 1 (Texas A & M); Houston, 3 (1 KU; 2 MVZ); Eagle Lake, 1 (Texas A & M). LOUISIANA: 5 mi. N Baton Rouge, 1 (LSU); _1 mi. W LSU Campus, Baton Rouge_, 1 (LSU); _Baton Rouge_, 7 (1 AMNH; 5 LSU; 1 USNM); _1/2 mi. E Baton Rouge_, 1 (LSU); North Island, Grand Lake, 1 (LSU); Lafayette, 2 (USNM); Houma, 2 (USNM). GEORGIA: Beachton, 11 (6 Chicago Mus.; 5 USNM). FLORIDA: _2 mi. S Tallahassee_, 1 (AMNH); 5 mi. W Jacksonville, 1 (AMNH); Aucilla River, 15 mi. S Waukenna, 7 (Univ. Fla.); _Aucilla River, at U.S. Hgy. 98_, 8 (Univ. Fla.); _W of Gainesville_, 1 (Univ. Fla.); Gainesville, 3 (2 Univ. Fla.; 1 Univ. Mich.); _near Gainesville_, 1 (Univ. Fla.); _Alachua County_, 1 (Univ. Mich.); 2 mi. SW Deland, 2 (Univ. Fla.); head of Chassahowitzka River, 1 (USNM); Lakeland, 2 (Univ. Fla.); Seven Oaks [near present town of Safety Harbor], 2 (1 AMNH; 1 USNM); Lake Kissimmee, 1 (USNM); Palm Beach, 1 (Univ. Fla.); _Mullet Lake_ (not found), 1 (USNM).